hash_tool

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It lists operations and algorithms but fails to disclose important behaviors such as whether files are read from disk, what output format is returned (e.g., hex digest, exit codes, human-readable result), error handling for missing files, or whether the tool has any side effects. For a tool with multiple operations, this lack of behavioral context is a significant gap.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is two concise sentences, front-loaded with the tool's core purpose. It efficiently lists operations and algorithms without unnecessary words or repetition. Every sentence contributes useful information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool has 8 parameters and multiple operation modes, but the description does not explain how parameters map to operations, nor does it describe expected outputs or return formats. The rich schema compensates for parameter clarity, but the lack of an output schema and the absence of operation-specific guidance leave the description only partially complete for an agent to invoke it correctly across all scenarios.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema already documents each parameter's meaning. The description adds a high-level grouping of operations and algorithms but does not clarify conditional parameter relationships (e.g., which parameters are required for the 'verify' operation versus 'compare'). It reinforces enum values already present in the schema without adding new semantic depth.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states 'File hashing and verification' and enumerates specific operations (hash, verify, compare, multiple, string) and algorithms (md5, sha1, sha256, sha512). This makes the tool's purpose unmistakable and distinguishes it from all sibling tools, none of which are hashing-related.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies use cases (hashing files, verifying against expected, comparing two files, batch, and string hashing) but does not explicitly state when to use this tool over alternatives or when not to use it. Given the sibling list contains no similar tools, the context is clear, but no direct alternatives or exclusions are mentioned.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.